Reinforcement device and use of it in walls

ABSTRACT

The invention relates to a reinforcement device for fastening, in this context, tremendous loads to particularly weaker walls of the type wallboard coated stud frame, and to contribute to the ability of walls to resist horizontal forces. The reinforcement device comprises portions, which connect and reinforce the parts of the wall construction. Thus, exceeding a materials tensile strength can be avoided, and the forces are distributed over a larger area, wherein the resistibility thereof can be summarised to a larger resistance. In a certain embodiment the reinforcement device can be used for fastening in solid constructions, such as light concrete and hollow brick constructions.

TECHNICAL FIELD OF THE INVENTION

[0001] The present invention relates to a device for fastening detailsto walls and/or reinforcement of walls comprising wallboards, forexample of gypsum, mounted to a framework, wherein the supporting partsmay be studs of, for example, wood or metal. The device is to bepositioned in the areas of the wallboard absent of framework parts.

[0002] When the device is provided with a cavity filling effect theindentation of the wallboards is reduced under the influence of stress.

[0003] For example, such an ability is required for backings to be tiledor otherwise coated with rigid materials which may crack and break, orwhen a rigid construction is required or desired.

STATE OF THE ART

[0004] The traditional method to perform fastening to wallboards of, forexample, gypsum, may be to introduce plugs of plastic or rubber intopredrilled apertures in the wallboard. These plugs are wedged whenexpanding and are forced against the edges of the wallboard in theaperture, for example when a screw having a larger diameter than theaperture usually provided in the plug is introduced therein. So calledhollow wall screw anchors are also present, which are Introduced into asmall aperture and expands on the rear side of the wallboard.

[0005] Screws having an elongated screw nut profile are also present.The screw nut profile may be positioned parallel to the screw and, whenbrought through the wallboard, extended perpendicular to the screw toreceive support from the rear side of the wallboard. In one embodimentthe invention can be limited to a similar range of application, which isindicated essentially with reference to FIGS. 20, 21, 22, 23.

[0006] One major drawback with the devices according to prior art isthat they do not tolerate large forces before the material of thewallboard is breaking, because of the use of only one part of the wall.

[0007] When more rigid walls are required than normally the studs arearranged closer. Usually this imply a distance between the studs of 40cm. To reinforce present walls removal of one wallboard is required foropening the wall to enable the introduction of more studs, which thenare coated with a wallboard of normal quality. Alternatively more rigidspecial wallboards present on the market are selected. Then, theoriginal distance between the studs can be used, which usually is 60 cm.Also in this case one wallboard is removed. Yet another manner is toprovide the wall with an additional standard wallboard. This imply that,for example, the length of a bathroom wall usually is reduced by twotimes the thickness of a wallboard, which in a normal case results intwo times 13 mm, i.e. 26 mm. This might cause a problem with thedimensions of the interior equipment, such as the dimensions of abathtub to be reinstalled and consequently is not fitting in its earlierposition. Yet a more extensive drawback is in this case that presentwater conduit connections may be found inside the wall, wherein a waterleakage is undetectable, and if a leakage arise the water is forced intothe wall by the impermeable layer on the surface of, for example,sanitary walls. All cases also require a large amount of work andmaterials and are consequently expensive. Usually, the costs forelectricity and conduit installations increase if the number of studsand wallboard layers are altered in present walls.

SUMMARY OF THE INVENTION

[0008] One object of the present invention is to enable larger loads onfastening means than possible with present devices, and to enablereinforcement of the wallboards of a wall. The reinforcement device maybe used for fastening exclusively or reinforcement exclusively or incombination, for example, when particularly large stress is to bemanaged.

[0009] The present invention uses the fact that, for example, a wall ofgypsum wallboard mounted on a framework of studs comprises one wallboardon each side of a stud. The reinforcement device is in its most simpleembodiment a cylinder adapted to reach through one of the wallboardsfrom its outer side and through the space between the wallboards, whichspace is a result of the stud, to the inner side of the oppositewallboard. In this position the cylinder may be fastened by the means ofa glued joint. Thus, a fastening means is obtained having a leversubstantially increasing its ability to bear loads mounted to the freeend thereof. If the direction of the forces is increased towards avertical direction the importance of the lever-forming design of thecylinder is increasing, especially when mounted in a substantiallyvertical construction. The ability of the cylinder to handle forces islimited by the strength of the glued joint at the opposite wallboard andthe size of the contact surface of the lead through of the frontwallboard. When loaded until collapse the glued joint is breaking and/orthe material at the inlet of the wallboard is crushed. The distancebetween the wallboards can also be of importance.

[0010] The lever is increased with the distance, which results in a moreextensive resistance. The cylinder must be rigid to avoid bendingthereof.

[0011] Further, the cylinder may be hollow in its length and providedwith holes through the portion of the surface thereof, positioned in thespace of the wall.

[0012] For example, an elastic fabric or film may further be positionedaround the cylinder, which functions as a mould for expanding substancesinjected into the cylinder upon requirement. These force their way outthrough the holes and fill the mould surrounding the cylinder, wherein arigid body casting the cylinder and sticking to and filling between thewallboards is obtained. This results in a reinforcement deviceincreasing the rigidity of the wall and to which, for example, screws orhooks can be mounted and then loaded with extensive loads.

[0013] By increasing the area glued to the opposite wallboard and theradius of the reinforcement device at the lead through of the wallboard,the performance is increased accordingly.

[0014] According to one embodiment the device may be regarded as acylinder with a first and a last portion having a somewhat largerdiameter than the intermediate portion. This design is used to enablefor the wire cloth to be winded up on the intermediate portion, whereinthe wire cloth can be brought through the aperture arranged in the outerwallboard in the mounting procedure. The performance is increased withincreasing end diameters of the cylinder. The glued end of the cylinder,may in every embodiment be bordered for improved adherence.

[0015] If the wall is filled with a medium, for example present types ofsufficiently stabile insulation, the cylinder does not have to besurrounded by the wire cloth. Instead a space of desired dimensions canbe formed in the current medium, which space is adapted for the currentdesign of the reinforcement device.

[0016] According to one embodiment an elongated plate is mounted in theend of the cylinder, which is to be glued to the opposite wallboard. Bythis manner the largest possible surface can be brought through thesubstantially circular aperture.

[0017] According to another embodiment a further elongated plate isenclosed, which is unattached and thread onto the cylinder shaft. Thisplate can then be pulled towards the back side of the first wallboardand glued thereto. This will increase the strength of the wallboard and,thus, the loading capacity.

[0018] When an elongated plate is used the plates can either bepositioned opposite each other, or with 180 degrees of displacement, andthen be turned to an optional position in a full circle of 360 degreesas a combined unit, dependent on the direction and size of the currentforces and how these, in each case, are handled in the best manneraccording to calculation.

[0019] In several of the different embodiments the reinforcement devicecan be provided with the wire cloth, and thereby with reinforcingfillings between the wallboards.

[0020] According to one embodiment, where improvement of the wall tocarry horizontal pressure is desired but filling of the space betweenthe wallboards with more than the cylinder not is desired, the portionof the cylinder not glued to the rear wallboard and the aperture throughthe wallboard may be formed somewhat conical. The gap formed thereby maythen be filled with a hardening joint sealing compound. Thisconstruction transfers horizontal forces applied to the front wallboardalso to the rear wallboard. The extracting resistance of thereinforcement device in a horizontal direction is also improved.

[0021] All cylinder tubes of fastening devices adapted for injection maybe provided with an adapter unit between the internal cylinder area anda hole adapted for a screw after injection of, for example, an expandingsubstance.

[0022] The device may in some embodiments, especially as a straightcylinder (12) and (15) or having a reel shape (18), also be applied insolid materials, such as light concrete or hollow bricks.

[0023] The devices are then glued to the surrounding material in theentire length of the device, or a desired and possible portion thereof.

[0024] According to one embodiment one construction part may beexcluded, for example a cylinder, which enable fastening to the rearwallboard. Instead a more traditional reinforcement of the frontwallboard may be used.

[0025] To facilitate the mounting of the device, particularly at thehardening of glues or joint compounds if used, a fixing deviceassociated to the device may be used. This comprises of a substantiallycircular cone having a peg, which can be inserted in the aperture 16.

[0026] The cone is provided with a larger diameter than the device sothat it is supported by surrounding surfaces, to which it temporarilycan be fastened by the means of glue and/or a pin.

[0027] It may also be provided with filling spacers to compensate fordifferences in diameter. Such a spacer may also be mounted permanently.

[0028] If there is space filling means, for example mineral woolinsulation in the wall, and removal of this is desired a space clearingtool developed for the device may be used. The tool comprises a barhaving a pivoted front portion provided with a cutter. This tool isinserted through an aperture in the wallboard and is heavily rotated,for example by the means of a drilling machine. The pivoted portion isextended and clears a space having a radius corresponding to the lengthof the pivoted portion and a space length corresponding to how far thetool is inserted.

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings are labelled: Fig . . . , and a number, and shall beread in the order stated. The numerical order may be reversed.

[0030] The invention will now be described in more detail with referenceto the accompanying drawings, in which

[0031]FIG. 1 is a schematic side view in longitudinal section of thedevice according to one embodiment as a straight cylinder mounted in awallboard coated timber frame wall.

[0032]FIG. 1F (F refer to a front view=the outside of a wall)illustrates the device from the front.

[0033]FIG. 2 is a longitudinal section view from above of the device inFIG. 1.

[0034]FIG. 3 is a schematic side view in longitudinal section of thedevice according to one embodiment as a straight cylinder and providedwith a joint lead through of the wallboard.

[0035]FIG. 3F illustrates the device in FIG. 3 from the front.

[0036]FIG. 4 is illustrates the device in FIG. 3 from above.

[0037]FIG. 5 is a schematic side view in longitudinal section of thedevice according to one embodiment as a straight cylinder, having aconical end portion, mounted in a wallboard coated stud frame wall.

[0038]FIG. 5F illustrates the device in FIG. 5 from the front.

[0039]FIG. 6 is a longitudinal section view from above of the device inFIG. 5.

[0040]FIG. 7 is a schematic side view in longitudinal section of thedevice according to one embodiment similar to a reel.

[0041]FIG. 7F illustrates the device in FIG. 7 from the front.

[0042]FIG. 8 illustrates the device in FIG. 7 from above.

[0043]FIG. 10 is a schematic side view in longitudinal section of thedevice according to an embodiment similar to FIG. 7, but joint compoundhas been applied, for example an expanding substance.

[0044]FIG. 9F illustrates the device in FIG. 9 from the front.

[0045]FIG. 9 illustrates the device in FIG. 10 from above.

[0046]FIG. 15 and FIG. 16 is a schematic side view in longitudinalsection of the device according to one embodiment, in which the rearportion of the device is elongated and as large as possible forinsertion through the aperture of the front wallboard. The movable part,which is similar to the rear portion and can be pulled along thecylinder to the rear side of the front wallboard, is also illustrated.Further, the cylinder body and the portion filling the lead through inthe wallboard is illustrated.

[0047]FIG. 15F illustrates the device in FIG. 15 and FIG. 16 from thefront.

[0048]FIGS. 11 and 12 illustrates the device in FIG. 15 and FIG. 16 fromabove.

[0049]FIG. 18 illustrates the same device as in FIG. 15 and FIG. 16provided with 27 and injected with 26.

[0050]FIG. 18F illustrates the device in FIG. 15 and FIG. 16 from thefront.

[0051]FIG. 14 illustrates the device in FIG. 15 and FIG. 16 from above.

[0052]FIG. 13 is a schematic view from above illustrating the conversionof FIG. 15 to FIG. 17.

[0053]FIG. 17F illustrates FIG. 17 from the front.

[0054]FIG. 19 illustrates the device in FIG. 17 from the side andprovided with 27, 26.

[0055]FIG. 19F illustrates FIG. 19 from the front.

[0056]FIG. 20 is a schematic side view of the device illustrated withoutthe cylinder and having one plate pulled towards 30. This design of thedevice reinforces and fastens in one wallboard only, namely the oneclosest to the fastening means.

[0057]FIG. 21 illustrates the device in FIG. 20 from the side in acontracted position.

[0058]FIG. 22 illustrates the device in FIG. 20 from the front.

[0059]FIG. 23 illustrates the device in FIG. 21 from above.

DESCRIPTION

[0060] With reference to FIG. 1 the reinforcement device is illustratedas a straight and possibly solid cylinder body 12 arranged betweenwallboards 10. This design is adapted to be utilized for the fasteningof fastening means, such as screws, to fasten loads acting in asubstantially perpendicular direction in relation to the longitudinalsection. The cylinder body 12 comprises an aperture 16 for fasteningmeans, which aperture 16 is arranged along the centre of the cylinderbody 12. The cylinder body further comprises a bordered end 13, a fixingpin 22 to protrude into a rear wallboard 10, which fixing pin 22 isprojecting from one end of the cylinder body 12, and a glued joint 14.An area of a wallboard lead through 15, or envelope surface of thecylinder body 12, is illustrated in FIG. 1. FIG. 1F illustrates thedevice from the front, i.e. from the outside of the construction, whichnormally is a wall. FIG. 2 illustrates the device from above, wherein astud 11 also is indicated.

[0061] An aperture is arranged in the front wallboard 10, wherein thecylinder body 12 provided with the glued joint 14 can be introduced andfastened to the rear wallboard 10.

[0062] With reference to FIG. 3 the reinforcement device is illustratedas a cylinder body 12 provided with a glued joint 14 at one portion ofthe cylinder body 12 to be positioned at the front wallboard 10. Thisdesign is adapted for utilization in connection with the fastening offastening means, such as screws, to fasten loads acting in asubstantially perpendicular direction in relation to the longitudinalsection. However, the glued joint 14 contributes to a certain extent tothe distribution of horizontal forces acting upon the wallboard, and toincrease the extraction resistance of the reinforcement device in ahorizontal plane. For example, the cylinder body 12 comprises a borderedcylinder surface 24 at the wallboard lead through area 15. FIG. 3Fillustrates the device from the front, i.e. from the outside of theconstruction, which usually is a wall. FIG. 4 illustrates the devicefrom above. An aperture is arranged in the front wallboard, wherein thecylinder body 12 provided with the glued joint 14 can be inserted andfastened to the rear wallboard and the lead through.

[0063] With reference to FIG. 5 the reinforcement device is illustratedas a cylinder body 35 having a conical end portion. When a tapered leadthrough 36 and the glued joint 14 is arranged, this embodiment isadapted to be used for the fastening of fastening means, such as screws,to fasten loads acting in a substantially perpendicular direction inrelation to the longitudinal section. However, the glued jointcontributes to the distribution of horizontal forces acting upon thewallboard, and increases the extraction resistance of the reinforcementdevice in a horizontal plane. FIG. 5F illustrates the device from thefront, i.e. from the outside of the construction, which usually is awall. FIG. 6 illustrates the device from above.

[0064] The mounting is performed as in FIG. 3, with the addition of thetapered aperture 36 and that the cylinder body 12 is changed to cylinderbody 35.

[0065] With reference to FIG. 7 the reinforcement device is illustratedas a reel-shaped hollow cylinder body 18. The reel-shape is used when athinner intermediate portion is desired. When the rear bordered portion20 of the reel-shaped cylinder and the wallboard lead through area 15 isformed with a larger surface, this embodiment for the fastening offastening means, such as screws, to fasten loads acting in asubstantially perpendicular direction in relation to the longitudinalsection, will carry larger loads. A glued joint 25 between a frontportion 23 of the reel-shaped cylinder 18 and the front wallboard 10contributes to the distribution of horizontal forces acting upon thewallboard and the extraction resistance of the reinforcement device in ahorizontal plane will increase by using a larger bordered rear portion20. When a reel-shaped hollow cylinder body 18 is used, this may beprovided with a reduction plug 21 having an aperture for fasteningmeans. For example, the cylinder body 18 comprise holes 19. FIG. 7Fillustrates the device from the front, i.e. from the outside of theconstruction, which construction usually is a wall. FIG. 8 illustratesthe device from above.

[0066] The mounting is performed as in FIG. 3, but the straight cylinderbody 12 is changed to a reel-shaped cylinder body 18 and the glued joint14 is changed to the glued joint 25.

[0067] With reference to FIG. 10 the reinforcement device is illustratedas a reel-shaped cylinder body 18. The reel-shape is used when a thinnerintermediate portion is desired. An elastic wire cloth 27, or anothersuitable medium, can be applied to this intermediate portion when anexpanding joint compound 26 is intended to be used. After the wire cloth27, which can be compared to a portion of a very elastic stocking, isthread onto the thinner intermediate portion of the cylinder body, thecloth is glued at the, points 29 with, for example, a fast hardeningglue of a conventional hot-melt type of glue. This is performed toenable filling of the mould with joint compound, such as polyurethanefoam, and preventing it from flowing out thereof. When the rear borderedportion 20 of the reel-shaped cylinder and the wallboard lead througharea 15 is formed with a larger surface, this embodiment for thefastening of fastening means, such as screws, to fasten loads acting ina substantially perpendicular direction in relation to the longitudinalsection, will carry larger loads. A glued joint 25 and the jointcompound 26 contributes to the distribution of horizontal forces actingupon the wallboard and the extraction resistance of the reinforcementdevice in a horizontal plane will increase by using a larger 20 and thejoint compound 26. When 18 is used, this may be provided with areduction plug 21. FIG. 9F illustrates the device from the front, i.e.from the outside of the construction, which usually is a wall. FIG. 9illustrates the device from above when applying the joint compound 26 bythe means of a nozzle 28. Mounting procedure: An aperture adapted forthe cylinder body 18 is arranged in the front wallboard. The diameter ofthe aperture shall correspond to the front portion 23 and the rearportion 20 of the reel-shaped cylinder. Glue or joint compound for thejoints 14 and 25 is applied. A wire cloth 27 is thread onto theintermediate portion of the cylinder. The cylinder body is brought intothe aperture of the front wallboard and is glued to the rear wallboard.The cylinder and the mould is filled with, for example, polyurethanefoam 26.

[0068] With reference to FIG. 15 and FIG. 16 the reinforcement device isillustrated in a side view of the device according to one embodiment, inwhich the rear portion of the device is elongated and as large aspossible to be brought through the insertion aperture in the frontwallboard 10. Further, the movable part is illustrated, which is similarto the rear portion, and can be pulled along the cylinder to the rearside of the front wallboard. Further, the cylinder body and the portionfilling the wallboard lead through is illustrated. The cylinder body 32,having its front portion 30 and its rear portion 31, forms a rigidlyassembled unit. In FIG. 15 the front portion 30 is connected with thefront wallboard 10 by the means of the glued joint 25 and the rearportion 31 is connected with the rear wallboard 10 by the means of theglued joint 14. The tapered sides of the front portion 30 provides asupporting part, particularly when a movable part 34 is pulled againstthe rear side of the front wallboard. The remaining sides of the frontportion 30 are not tapered. This is due to that these surfaces areexpected to substantially distribute forces perpendicular to 15. Thus,horizontal forces acting to move the fastening device are avoided. Theelliptic shape of a rear cylinder portion 31 and the movable part 34contributes to give maximum surface to those portions which are to bebrought through the aperture in the front wallboard. In turn thisresults in maximum reinforcement and fastening capacities. The size of30 is also important for these capacities. Further, pull-strings 33 arearranged on each side of the cylinder, wherein the movable part 34rotates when the pull-strings are winded around the cylinder and 34 ispulled along the cylinder to its front position against 30. FIG. 16illustrates the movable part 34 connected with the front wallboard 10 bythe means of the glued joint 14.

[0069]FIG. 15F illustrates the device in FIG. 15 and FIG. 16 from thefront.

[0070]FIG. 11 and FIG. 12 illustrates the device in FIG. 15 and FIG. 16from above.

[0071] Mounting procedure: The combined unit 30,32,31, having themovable part 34 arranged adjacent to the rear portion 31, is insertedinto the aperture adapted to the front portion 30. The aperture adaptedto 30 may, for example, be arranged with a conventional hole cutter andtapered by the means of a file to fit the elliptic shape of 30. Theelongated plates 31 and 34 are held in a parallel position and areinserted into the aperture with the portion extending the most from thecentral axis of the cylinder first. The rear portion 31 is alreadyprovided with glue and is glued to the rear gypsum wallboard, and inoccurring cases to the glued joint 25 on the portion 30, and on the part34 glued to the rear side of the front wallboard. This latter glue isalso gluing the front portion 30 to the movable part 34. The combinedunit described above is pressed against the rear gypsum wallboard and isfastened thereto by the means of the fixing pin 22. As a result themovable part 34 can be pulled into position by the means of thepull-strings 33, see FIG. 16. Locking means can now be threaded onto thepull-strings, which may be permanent or in position only until thejoints are hardened. If a hollow cylinder body is used the holes thereofcan, if required, be reduced by the means of an adapter 21. If fillingwith joint compound 26 is intended as is illustrated in FIG. 18, this isinjected before sealing with 21 takes place.

[0072]FIG. 18 illustrates the same device as in FIG. 15 and FIG. 16 butprovided with the elastic wire cloth 27 and injected with jointcompound.

[0073] This increase the capacity of the reinforcement device to give,for example, a wall increased ability to bear larger horizontal andvertical forces in the area affected by forces, which in turn acts uponthe fastening means.

[0074]FIG. 18F illustrates the device in FIG. 18 from the front.

[0075]FIG. 14 illustrates the device from above.

[0076] Mounting procedure: The same as described with reference to FIGS.15 and 16 with the addition that the wire cloth 27 is threaded beforethe parts 34 and 31 are brought together. Fastening of the wire cloth tothe mentioned parts is also required, suitably by a conventional fasthardening hot-melt, to be stretched when 34 is pulled into positionagainst the rear side of the front wallboard. See FIGS. 18, 18F and 14.

[0077]FIG. 13 illustrates how the reinforcement device has been mountedaccording to FIG. 17, wherein the unattached part 34 has been brought torotate 180 degrees. The instructions of FIGS. 15 and 16 is followed, butwith the difference that the pull-strings 33 are winded half way aroundthe cylinder body. When 34 is pulled into position against the rear sideof the front wallboard, 34 rotates a half turn.

[0078]FIG. 19 illustrates a case when the injection of joint compound 26Is continued. This must be prepared by the mounting of wire cloth 27before 34 is brought together with 31, before the insertion through theaperture arranged in the front wallboard. Since 34 will rotate a halfturn 31 and 34 must be kept in this final position when the wire clothis fastened, suitably with a fast hardening hot-melt. Suitable fasteningpoints are:

[0079] See FIGS. 19 and 19F.

[0080] 1. fold the wire cloth and fasten it to 34, close to the cylinderbody but not against it.

[0081] 2. fold the wire cloth and fasten it to 31, one fastening point,at the rounded end, close to the cylinder body.

[0082] 3. pull the wire cloth over the corners of 31 and fasten itthereto.

[0083] The wire cloth is now fastened in four points and is resting uponthe cylinder body when the reinforcement device is mounted to the wall,and can receive polyurethane foam for example.

[0084] With reference to FIG. 20 the reinforcement device is illustratedwithout the cylindrical intermediate portion. The rear wallboard isrectangular, or substantially rectangular. An aperture having a suitablesize, adapted for fastening fastening means 37 and the plate 38, isarranged in the front wallboard. The device can be turned in an optionaldirection in a full circle of 380 degrees. The edges of the aperture istapered to fit to 30, or alternatively an unattached front portion. Theplate 38 is provided with glue and connected with 30, which can beprovided with glue 25, through the pull-strings 33. The plate is broughtinto the aperture, which among other things is possible by the lengthand flexibility of the pull-strings. The unattached portion 30 isinserted into the aperture and is filling it up. The plate 38 is pulledtogether with 30 and the rear side of the front wallboard, and can befastened thereto by the means of locking means threaded onto thepull-strings. Except FIG. 20, illustrating the reinforcement device inthis form from the side when positioning 30, having its elliptic frontwith the larger diameter, horizontally, FIG. 21 illustrates the devicefrom the side when it is pulled together and otherwise positioned asillustrated in FIG. 20. FIG. 22 illustrates the device positioned asdescribed in FIG. 20 from the front. FIG. 23 illustrates the devicepositioned as in FIG. 20 from above.

[0085] If space filling means, such as mineral wool insulation, ispresent in the wall and the removal of this is desired a space clearingtool developed for the device may be used. The tool comprises a barhaving a pivoted front portion provided with a cutter. This tool isinserted through an aperture in the wallboard and is heavily rotated,for example by the means of a drilling machine. The pivoted portion isextended and clears a space having a radius corresponding to the lengthof the pivoted portion and a space length corresponding to how far thetool is inserted.

[0086] To facilitate the mounting of the device, particularly at thehardening of glues and joint compounds, a fixing device associated tothe device may be used. This comprise of a substantially circular conehaving a peg, which can be inserted in the aperture 16.

[0087] The cone is provided with a larger diameter than the device sothat it is supported by surrounding surfaces to which it temporarily canbe fastened by the means of glue and/or a pin. It may also be providedwith filling spacers to compensate for differences in diameter. Such aspacer may also be mounted permanently.

[0088] The device can in some of the embodiments, particularly as astraight cylinder 12 and 35 or having a somewhat reel-shape 18, also beapplied to solid materials, such as light concrete or hollow bricks. Thedevices are then glued to the surrounding material in the entire lengthof the device, or a desired and possible portion thereof.

1. A reinforcement device for walls of the type wallboard coated studframe, which reinforcement device is designed to support a load andcontribute to the capacity of walls to resist outer pressure,characterised in that the device comprises a body (12) to provide aconnecting effect between opposite arranged wallboards (10) of a wall,and that the device is providing a spreading effect of forces actinglocally on said wall.
 2. A reinforcement device according to claim 1,wherein said cylinder body (12) is solid and fastened in a rear portionthereof by the means of a glued joint (14) and a pin (22), and is guidedand supported in a front portion thereof by a surface (15). The body(12) is provided with an aperture for fastening means (16).
 3. Areinforcement device according to claim 1, wherein said cylinder body(12) is solid and fastened in a rear portion thereof by the means of aglued joint (14) and a pin (22), and is guided and supported in a frontportion thereof by a surface (15), in a glued joint (14). The body (12)is provided with an aperture for fastening means (16).
 4. Areinforcement device according to claim 1, wherein said cylinder body(35) is solid and designed with a conical end portion, and is fastenedin a rear portion thereof by the means of a glued joint (14) and a pin(22), and is guided and supported in a front portion thereof by abordered surface (15), in a glued joint (14). The body (12) is providedwith an aperture for fastening means (16).
 5. A reinforcement deviceaccording to claim 1, wherein said cylinder body (18) is reel-shaped andsolid or hollow. It is hollow if it is to be surrounded by a wire cloth(27) and cast-surrounded with joint compound (26). The cylinder body isfastened in a rear portion thereof by the means of a glued joint (14)and a pin (22), and is guided and supported in a front portion thereofby a bordered surface (15), in a glued joint (25). The body (12) isprovided with an aperture (16) for fastening means and, if the cylinderbody is hollow, a reduction plug (21).
 6. A reinforcement deviceaccording to claim 1, wherein said cylinder body (18) is reel-shaped andhollow. It is hollow to be surrounded by a wire cloth (27) andcast-surrounded with joint compound (26). The cylinder body is fastenedin a rear portion thereof by the means of a glued joint (14) and a pin(22), and is guided and supported in a front portion thereof by abordered surface (15), in a glued joint (25). The body (12) is providedwith an aperture (16) for fastening means and, if the cylinder body ishollow, a reduction plug (21).
 7. A reinforcement device according toclaim 1, comprising the device according to one embodiment, wherein therear portion of the device is elongated (31), and comprises a movablepart (34) on the cylinder body. Further, the cylinder body (32) and theportion filling the lead through (30) in the wallboard are included. Thecylinder body (32), having its front portion (30) and its rear portion(31), provides a fixed unit. The unit is mounted in a rear portionthereof by the means of a glued joint (14) and a pin (22), and is guidedand supported in a front portion thereof by a surface (15). Further, aglued joint (14) is included, which glues the movable part to the rearportion of the front wallboard. Further, a reduction plug (21) isincluded, having an aperture for fastening means (16) if the cylinderbody is hollow, and a wire cloth (27) is included, wherein the devicecan be filled with joint compound. Further, the movable part is turned180 degrees in relation to the fixed unit. Further, pull-strings (33)are included, which are attached to the movable part (34), and the useof these pull-strings to move the movable part and to rotate it alongthe cylinder body is included. Further, a lock for threading onto thesepull-strings is included.
 8. A reinforcement device according to claim1, comprising the device without the cylindrical intermediate portion.The rear plate (38) is rectangular, or essentially rectangular. Thefront plate (30), which can be provided with glue (25), is thread ontothe pull-strings (33), which are fastened in the rear plate (38). Thedevice can be turned in an optional direction in a full circle, or 380degrees. The plate (28) is provided with glue (14). The front plate (32)is comprised by an elliptic front side and a circular back side.
 9. Useof a reinforcement device according to claim 1 in connection withreinforcement of stud frame walls.
 10. Use of a reinforcement deviceaccording to claim 1 in connection with reinforcement of more rigidwalls, for example hollow brick walls or light concrete walls or thesimilar.
 11. A reinforcement device according to claim 1, comprising thedevice according to some embodiments, particularly as a straightcylinder body (12, 35), or having some degree of reel-shape (18), alsoapplied to solid materials, such as light concrete or hollow bricks. Thedevices are then fastened to the surrounding material by glue in theentire length of the device, or in a desired and possible portionthereof.